MLA

The Parricide a Sketch of Modern Patriotism. [Graphic]. publisher not identified, 0AD. https://collections.library.yale.edu/catalog/10723014.

APA, 6th edition

The parricide a sketch of modern patriotism. [graphic]. (0 C.E.). [Caricatures and cartoons, Political cartoons England 1776, Satires (Visual works) England 1776, Periodical illustrations, Etchings England 1776, Engravings England 1776]. publisher not identified. https://collections.library.yale.edu/catalog/10723014.